交联腐植酸负载金属配合物对Heck反应的催化性能  

Catalytic Properties of Complexes of Cross-linking Humic Acid Supported Metals on Heck Reaction

作　　者：徐启杰[1] 刘聚胜[2] 刘飞[1] 崔元臣[1] 

机构地区：[1]河南大学化学化工学院,开封475001 [2]郑州大学化学系,郑州

出　　处：《应用化学》2008年第8期926-930,共5页Chinese Journal of Applied Chemistry

基　　金：河南省自然科学基金项目(611020500)

摘　　要：以腐植酸为原料,环氧氯丙烷为交联剂,制得交联腐植酸(CL-HA),通过红外光谱和溶解性实验分析,证实得到交联产物。依次将PdCl2、NiCl2负载于交联腐植酸上,得到交联腐植酸负载Pd(CL-HA-Pd)和交联腐植酸负载Pd/Ni催化剂(CL-HA-Pd/Ni),用NaBH4还原,分别得到其还原产物。以芳基卤与乙烯基化合物的反应为模型,研究了CL-HA-Pd、CL-HA-Pd(0)、CL-HA-Pd/Ni、CL-HA-Pd/Ni(0)4种催化剂对Heck反应的催化性能。结果显示,CL-HA-Pd/Ni具有较快的反应速率和较高催化活性,可成功催化取代芳基卤与丙烯酸的Heck反应,产率在80%以上。Cross-linking humic acid（CL-HA） was synthesized readily with epichlorohydrine as cross-linking reagent. The product was analyzed and confirmed by IR spectrum and solvent experiment. The catalysts of CL- HA-Pd and CL-HA-Pd/Ni were prepared via supporting PdCl2 and NiCl2 on cross-linking humic acid, respec- tively. The two catalysts were reduced with NaBH4. The catalytic performances of the four catalysts, CL-HA- Pd, CL-HA-Pd/Ni and their reducing products were studied via the Heck reaction of aryl halide with vinyl compounds. The results show that the catalyst could catalyze the Heck reaction of substituted aryl halide with crylic acid, the yields were above 80%.

关 键 词：交联腐植酸 钯 镍 NABH4 HECK反应 

分 类 号：O636[理学—高分子化学]